Lab Manual Exercise #4b
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Automated Chi Square Table For Dihybrid Corn Cross:

Grain
Phenotype
(Column 1)
Observed
Number
(Column 2)
Observed
Ratio
(Column 3)
Expected
Ratio
(Column 4)
Expected
Number
(Column 5)
[Obs # - Exp #]2
Expected #
(Column 6)
Purple &
Smooth
9/16
T x 9/16 =
Purple &
Shrunken
3/16
T x 3/16 =
Yellow &
Smooth
3/16
T x 3/16 =
Yellow &
Shrunken
1/16
T x 1/16 =
Total (T)
Number:
---------- ----------
Chi Square
Value:

 

JavaScript Courtesy Of Shay E. Phillips © 2001 Send Message To Mr. Phillips

Note: This Automated Table May Not Work With All Browsers. If Not,
Click Back To The Manual Table 4 And Do The Calculations Manually.

Good Fit Between Ear & Data
Poor Fit
df
.90
.70
.60
.50
.20
.10
.05
.01
1
.02
.15
.31
.46
1.64
2.71
3.85
6.64
2
.21
.71
1.05
1.39
3.22
4.60
5.99
9.21
3
.58
1.42
1.85
2.37
4.64
6.25
7.82
11.34
4
1.06
2.20
2.78
3.36
5.99
7.78
9.49
13.28

Table Of Probability Values


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